White light emitting device and light source module for liquid crystal display backlight using the same
    4.
    发明申请
    White light emitting device and light source module for liquid crystal display backlight using the same 审中-公开
    用于液晶显示器的白光发光装置和光源模块使用相同

    公开(公告)号:US20080180948A1

    公开(公告)日:2008-07-31

    申请号:US12003814

    申请日:2008-01-02

    IPC分类号: H01L33/00

    摘要: A white light emitting device including: a blue LE chip having a dominant wavelength of 430 to 455 nm; a red phosphor disposed around the blue light emitting diode chip, the red phosphor excited by the blue light emitting diode chip to emit red light; and a green phosphor disposed around the blue light emitting diode chip, the green phosphor excited by the blue LED chip to emit green light, wherein the red light emitted from the red phosphor has a color coordinate falling within a space defined by four coordinate points (0.5448, 0.4544), (0.7079, 0.2920), (0.6427, 0.2905) and (0.4794, 0.4633) based on the CIE 1931 chromaticity diagram, the green light emitted from the green phosphor has a color coordinate falling within a space defined by four coordinate points (0.1270, 0.8037), (0.4117, 0.5861), (0.4197, 0.5316) and (0.2555, 0.5030) based on the CIE 1931 color chromaticity diagram, and the red phosphor includes a phosphor represented by (Sr, Ba, Ca)AlSiN3:Eu and the green phosphor includes a phosphor represented by (Sr, Ba, Ca)2SiO4:Eu.

    摘要翻译: 一种白色发光器件,包括:主要波长为430至455nm的蓝色LE芯片; 配置在蓝色发光二极管芯片周围的红色荧光体,由蓝色发光二极管芯片激发的红色荧光体发射红色光; 以及配置在蓝色发光二极管芯片周围的绿色荧光体,由蓝色LED芯片激发的绿色荧光体发出绿色光,其中,从红色荧光体发出的红色光线具有落在由四个坐标点 0.5448,0.4544),(0.7079,0.22920),(0.6427,0.2905)和(0.4794,0.44633),从绿色荧光体发出的绿光具有落在由四个坐标定义的空间内的色坐标 基于CIE1931色度图,点(0.1270,0.8037),(0.4117,0.5861),(0.4197,0.5316)和(0.2555,0.5030),红色荧光体包括由(Sr,Ba,Ca)AlSiN Eu,绿色荧光体包括由(Sr,Ba,Ca)2 SiO 4:Eu表示的荧光体。